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RE: Urgent PCA Survey on Rebar Names

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Guess you don't go to the field anymore stan, It's probably beneath you
... <grin>

Rebars have been marked with the metric designation for at least 5 years
now. I bought these little cards from CRSI that I would bring with me
when doing structural observation. It basically gave you the metric size
of #3-#18 bars. All the reinforcing steel had metric markings along with
the mill id and the ribs. The cards were handy because of this size
conversion table and also the standard bends and hooks dimensions were
also on the card. 

The Highway folks and federally funded work is what drove this as
someone tries to make a push for a metric society. I'm not sure how many
mills use the old designations any more, I would venture not many if it
is made in the USA steel which is also a mandate for Fed. Work.

-gerard
Santa Clara, CA

-----Original Message-----
From: Jonathan Mallard [mailto:jonathan.mallard(--nospam--at)rwhitehead.com] 
Sent: Wednesday, September 11, 2002 7:18 AM
To: seaint(--nospam--at)seaint.org
Subject: RE: Urgent PCA Survey on Rebar Names

Stan, Scott, and others:

ASTM is actually BEHIND others in suggesting this change.

Some state DOT's require that even on English plans, that
you call out bars as 14-#16BX @ 9" with a weight of 75 lbs.
You still use 5/8 as the nominal diameter, As = 0.31 in^2
and a weight of 1.043 lbs. per foot.  It does throw you for
a loop the first time you see it, but it's really not that
big of a change.

This has been going on for about 18 months now.  I'm somewhat
surprised that it hasn't moved further in this direction.







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